| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Biodegradable Materials for Medical Applications II
|
| Presentation Title |
Microstructure and Biodegradation Behavior of Additively Manufactured Magnesium |
| Author(s) |
Leila Sorkhi, James Tomich, Joshua Hammel, Grant Crawford |
| On-Site Speaker (Planned) |
Leila Sorkhi |
| Abstract Scope |
Magnesium has gained significant interest for use as biodegradable implants due to its excellent biocompatibility, comparable mechanical properties to natural bone, and unique ability to naturally degrade in the physiological environment. However, the high biodegradation rate of magnesium alloys may result in hydrogen gas evolution and associated patient discomfort, or loss of implant mechanical integrity. Additive manufacturing offers the potential to develop compositionally gradient biodegradable implants and complex implant designs for improved biological function. In this work, direct energy deposition was used to fabricate Mg parts with various compositions. Microstructure was characterized using optical microscopy, scanning electron microscopy, and energy dispersive x-ray spectroscopy. Furthermore, the corrosion behavior of the samples was evaluated using potentiodynamic polarization and immersion methods in simulated body fluid. Finally, the effect of post-processing on microstructure and degradation behavior of the additively manufactured samples was evaluated. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |